ABAP Select data from SAP table ICLSERVCAT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICLSERVCAT table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ICLSERVCAT. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ICLSERVCAT table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ICLSERVCAT TYPE STANDARD TABLE OF ICLSERVCAT,
      WA_ICLSERVCAT TYPE ICLSERVCAT,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ICLSERVCAT> TYPE ICLSERVCAT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICLSERVCAT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICLSERVCAT
  INTO TABLE IT_ICLSERVCAT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICLSERVCAT
*  INTO TABLE @DATA(IT_ICLSERVCAT2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ICLSERVCAT INDEX 1 INTO DATA(WA_ICLSERVCAT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICLSERVCAT ASSIGNING <ICLSERVCAT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICLSERVCAT>-CLIENT = 1.
<ICLSERVCAT>-SCPOSID_INT = 1.
<ICLSERVCAT>-ACTIVE = 1.
<ICLSERVCAT>-CHANGEDBY = 1.
<ICLSERVCAT>-CHANGETIME = 1.

ENDLOOP.

LOOP AT IT_ICLSERVCAT INTO WA_ICLSERVCAT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICLSERVCAT-INACTIVETIME, sy-vline,
  WA_ICLSERVCAT-EFFFROMTIME, sy-vline,
  WA_ICLSERVCAT-EFFTOTIME, sy-vline,
  WA_ICLSERVCAT-TERMTIME, sy-vline,
  WA_ICLSERVCAT-DELETED, sy-vline,
  WA_ICLSERVCAT-OSYSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICLSERVCAT you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ICLSERVCAT TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ICLSERVCAT INTO WA_ICLSERVCAT.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit TSTAM, internal->external for field CHANGETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-CHANGETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-CHANGETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field INACTIVETIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-INACTIVETIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-INACTIVETIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field EFFFROMTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-EFFFROMTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-EFFFROMTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field EFFTOTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-EFFTOTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-EFFTOTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTAM, internal->external for field TERMTIME
CALL FUNCTION 'CONVERSION_EXIT_TSTAM_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-TERMTIME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-TERMTIME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SCPOS_QUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-SCPOS_QUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-SCPOS_QUANUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ICLDC, internal->external for field SCPOS_VALPERUNIT
CALL FUNCTION 'CONVERSION_EXIT_ICLDC_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-SCPOS_VALPERUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-SCPOS_VALPERUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RVU
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-RVU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-RVU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DIAID, internal->external for field DIAGID
CALL FUNCTION 'CONVERSION_EXIT_DIAID_OUTPUT'
  EXPORTING
    input =                      WA_ICLSERVCAT-DIAGID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICLSERVCAT-DIAGID.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ICLSERVCAT_STR, 
CLIENT TYPE STRING,
SCPOSID_INT TYPE STRING,
ACTIVE TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGETIME TYPE STRING,
INACTIVETIME TYPE STRING,
EFFFROMTIME TYPE STRING,
EFFTOTIME TYPE STRING,
TERMTIME TYPE STRING,
DELETED TYPE STRING,
OSYSID TYPE STRING,
OMANDT TYPE STRING,
SCPOSID_PREV TYPE STRING,
SERVCATID TYPE STRING,
SC_VARIANT TYPE STRING,
SCPOSID_EXT TYPE STRING,
SCPOSID_AMNTFROM TYPE STRING,
SCPOSID_AMNTTO TYPE STRING,
SCPOS_CURR TYPE STRING,
SCPOS_PARENT TYPE STRING,
SCPOS_TYPE TYPE STRING,
SCPOS_XSEL TYPE STRING,
BENTYPE TYPE STRING,
BENTYPE_EXP TYPE STRING,
SCPOS_QUANTITY TYPE STRING,
SCPOS_QUANTITYTO TYPE STRING,
SCPOS_QUANUNIT TYPE STRING,
SCPOS_VALPERUNIT TYPE STRING,
SCPOS_XREIMBURSE TYPE STRING,
SCPOS_XAPPROVAL TYPE STRING,
SCPOS_CALC_EXP TYPE STRING,
SCPOS_TXT_EXP TYPE STRING,
SCPOS_TAXCODEINV TYPE STRING,
RV TYPE STRING,
RVU TYPE STRING,
AVLENGTH TYPE STRING,
DEDUCTION TYPE STRING,
SURCHARGE TYPE STRING,
LOCALIZATION TYPE STRING,
CATAID TYPE STRING,
DIAGID TYPE STRING,
ARCHIVE_STATUS TYPE STRING,
ARCHIVE_FLUD TYPE STRING,
REJECTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICLSERVCAT_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ICLSERVCAT_STR-CLIENT sy-vline 
WA_ICLSERVCAT_STR-SCPOSID_INT sy-vline 
WA_ICLSERVCAT_STR-ACTIVE sy-vline 
WA_ICLSERVCAT_STR-CHANGEDBY sy-vline 
WA_ICLSERVCAT_STR-CHANGETIME sy-vline 
WA_ICLSERVCAT_STR-INACTIVETIME sy-vline 
WA_ICLSERVCAT_STR-EFFFROMTIME sy-vline 
WA_ICLSERVCAT_STR-EFFTOTIME sy-vline 
WA_ICLSERVCAT_STR-TERMTIME sy-vline 
WA_ICLSERVCAT_STR-DELETED sy-vline 
WA_ICLSERVCAT_STR-OSYSID sy-vline 
WA_ICLSERVCAT_STR-OMANDT sy-vline 
WA_ICLSERVCAT_STR-SCPOSID_PREV sy-vline 
WA_ICLSERVCAT_STR-SERVCATID sy-vline 
WA_ICLSERVCAT_STR-SC_VARIANT sy-vline 
WA_ICLSERVCAT_STR-SCPOSID_EXT sy-vline 
WA_ICLSERVCAT_STR-SCPOSID_AMNTFROM sy-vline 
WA_ICLSERVCAT_STR-SCPOSID_AMNTTO sy-vline 
WA_ICLSERVCAT_STR-SCPOS_CURR sy-vline 
WA_ICLSERVCAT_STR-SCPOS_PARENT sy-vline 
WA_ICLSERVCAT_STR-SCPOS_TYPE sy-vline 
WA_ICLSERVCAT_STR-SCPOS_XSEL sy-vline 
WA_ICLSERVCAT_STR-BENTYPE sy-vline 
WA_ICLSERVCAT_STR-BENTYPE_EXP sy-vline 
WA_ICLSERVCAT_STR-SCPOS_QUANTITY sy-vline 
WA_ICLSERVCAT_STR-SCPOS_QUANTITYTO sy-vline 
WA_ICLSERVCAT_STR-SCPOS_QUANUNIT sy-vline 
WA_ICLSERVCAT_STR-SCPOS_VALPERUNIT sy-vline 
WA_ICLSERVCAT_STR-SCPOS_XREIMBURSE sy-vline 
WA_ICLSERVCAT_STR-SCPOS_XAPPROVAL sy-vline 
WA_ICLSERVCAT_STR-SCPOS_CALC_EXP sy-vline 
WA_ICLSERVCAT_STR-SCPOS_TXT_EXP sy-vline 
WA_ICLSERVCAT_STR-SCPOS_TAXCODEINV sy-vline 
WA_ICLSERVCAT_STR-RV sy-vline 
WA_ICLSERVCAT_STR-RVU sy-vline 
WA_ICLSERVCAT_STR-AVLENGTH sy-vline 
WA_ICLSERVCAT_STR-DEDUCTION sy-vline 
WA_ICLSERVCAT_STR-SURCHARGE sy-vline 
WA_ICLSERVCAT_STR-LOCALIZATION sy-vline 
WA_ICLSERVCAT_STR-CATAID sy-vline 
WA_ICLSERVCAT_STR-DIAGID sy-vline 
WA_ICLSERVCAT_STR-ARCHIVE_STATUS sy-vline 
WA_ICLSERVCAT_STR-ARCHIVE_FLUD sy-vline 
WA_ICLSERVCAT_STR-REJECTION sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.